Miles per Hour to Feet per Second
Convert miles per hour to feet per second instantly. 1 mph = 1.4666666667 ft/s. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert miles per hour to feet per second
To convert miles per hour to feet per second, multiply by 1.4666666667. The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
ft/s = mph × 1.4666666667
Miles per Hour to Feet per Second conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Miles per Hour | Feet per Second |
|---|---|
| 1 mph | 1.466667 ft/s |
| 2 mph | 2.933333 ft/s |
| 3 mph | 4.4 ft/s |
| 5 mph | 7.333333 ft/s |
| 10 mph | 14.666667 ft/s |
| 20 mph | 29.333333 ft/s |
| 25 mph | 36.666667 ft/s |
| 50 mph | 73.333333 ft/s |
| 100 mph | 146.666667 ft/s |
| 500 mph | 733.333333 ft/s |
| 1,000 mph | 1,466.67 ft/s |
What is a miles per hour?
Exactly 0.44704 m/s. Road speeds in the US and UK.
What is a feet per second?
Used for ballistics, airflow and some engineering work.
The formula
ft/s = mph × 1.4666666667
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Miles per Hour to Feet per Second
- Type the number of miles per hour you want to convert.
- Read the result in feet per second straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked feet per second to miles per hour page.
Miles per Hour to Feet per Second — frequently asked questions
How many feet per second are in a miles per hour?
One miles per hour equals 1.4666666667 ft/s. ft/s = mph × 1.4666666667
What is the formula to convert miles per hour to feet per second?
The formula is ft/s = mph × 1.4666666667. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert feet per second back to miles per hour?
Divide instead of multiplying: one feet per second is 0.6818181818 mph. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this miles per hour to feet per second free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the miles per hour to feet per second.
- miles per hour to feet per second
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- how many feet per second in a miles per hour
- mph2ft/s
- miles per hour in feet per second
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error